Home / 280,476,734.40-420,715,101.60-165,516,350.40

Finding the Fourth Proportional to 280,476,734.40, 420,715,101.60 and 165,516,350.40

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Solution

The fourth proportional to 280,476,734.40, 420,715,101.60 and 165,516,350.40 is: 248,274,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,476,734.40 : 420,715,101.60 = 165,516,350.40 : x
  2. Step 2: Convert to fraction form
    280,476,734.40/420,715,101.60 = 165,516,350.40/x
  3. Step 3: Cross multiply
    280,476,734.40x = 420,715,101.60 × 165,516,350.40
  4. Step 4: Simplify right side
    280,476,734.40x = 69,635,228,174,997,208
  5. Step 5: Solve for x
    x = 69,635,228,174,997,208/280,476,734.40
  6. Step 6: Final answer
    x = 248,274,525.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.